Hi,
I built an web server by using arduino uno and a wi-fi shield. When my computer and wi-fi shield are connected to same network, the web page is monitored from the browser of the computer.
However, I also want to connect and display the web server from different network. How can I do this?
This isn't really an Arduino problem but you need to configure a router between the two networks.
There's lots of different ways that this works, depending on the networks in question. If you are talking about having your Arduino on your home network, and accessing it from out on the internet, then your ADSL/cable modem will probably have a Port Forwarding function that you can use to do this.